Resistor composition for spark plug having a resistor enclosed t
Resistor-aided starting of metal halide lamps
Resonant cavity magnetron having a helical cathode
Resonant cavity magnetron having a magnet system and magnetron d
Resonant coaxial cavities for a grid vacuum tube
Resonator for microwave lighting apparatus and manufacturing...
Retrofit kit for modular lamp controller
Retrofit light emitting diode tube
Retrofit light emitting diode tube
RF driven sulfur lamp having driving electrodes arranged to cool
RF driven sulfur lamp having driving electrodes which face each
Rippled-field magnetron apparatus
Rising sun magnetron with planar tuning member protruding into o
Rotatable multiple filament lamp and socket adapter
Rotation-magnetron-in-magnetron (RMIM) electrode, method of...
Safety filament assembly for double-enveloped arc discharge lamp
Safety switch for lamp including a light source capsule
Safety switch which renders hid lamp inoperative on accidental b
Safety switch which renders HID lamp inoperative on accidental b
Safety switch which renders HID lamp inoperative on _accidental